Jumping device



Aug. 9,1927. 1,638,350

G. H. LONG JUMPING DEVICE Filed Aug. 23, 1925 .63 g g E1 a IIIIHIPH N if; Q a N INVENTOR @EO/QGE h, Lowe WWW ATTORNEY Patented Aug. 9, 1927.

.GEORGE'H. LONG, 01 LANKERSHIM, CALIFORNIA.

JUMPING DEVICE.

Application filed August 23, 1926. Serial No. 130,998.

My invention relates to and has for its purpose the provision of a device adapted to be worn in the manner of a skate, one on each foot of a child, and operable by a jumping motion to project the child upwardly into the air, whereby the child is able to jump to relatively great heights and distances as determined by the jumping ability of the child.

I will describe only one form of jumping device embodying my invention and will then point out the novel features thereof in claims.

In the drawings Figure 1 is a view showing in side elevation one form of jumping device embodying my invention; a

Figure 2 is aview showing the jumping device in top plan.

Referring specifically to the drawings, my

invention. in its present embodiment comprises a foot receiving member 15 in the form of a metal'plate having the general outline of the foot and ribbed, as shown, to reinforce the plate against bending. At the heel end of the plate is a flange 16 upstanding from and formed integral with the edge of the plate, and to which is riveted or otherwise secured a heel saddle 17 formed of leather or other suitable material and having forwardly extending straps 18 which are adapted to embrace the instep of the foot of the wearer and secured in embracing relation thereto by means of buckles 19. Adj acent t-he forward end of the foot supporting plate are U-shaped yokes 20 on which are mounted sleeves 21, with straps 22 secured to the sleeves, and one of which carries a buckle 23 by which the straps can be secured to each other and in overlying relation to the toe portion of the foot for securing the latter to the foot receiving member.

Beneath the member 15 is a base member 24 in the form of a metal plate reinforced against bending by a longitudinal beading and of the same general contour as the plate 15. Interposed between the plates 15 and 24 is a full elliptical spring including an upper leaf 25 secured to the medial portion of the plate 15 by rivets 27 and a lower leaf 26 likewise secured to the medial portion of the plate 24 by rivets 28. The ends of the leaves 25 and 26 are pivotally connected by bolts 29 extended through sleeves of the leaves in the usual manner. The plate 2a is preferably formed with depending proturbances 30 which function to prevent skidding of the base plate when the device is in actual use and to thereby permit the operator to secure a firm purchase on the ground, The ends of the plate 24 are connected to the ends of the plate 15 by flexible straps 31. and 32, preferably leather straps, with their ends riveted to the forward ends of the plates 15 and 21 in the instance of the strap 31, while the straps 32 has its lower endriveted to the plate 24 whileits upper end is connected to the saddle '17 and preferably formed integral therewith. As clearly shown in Figure 1, the strap 32 is extending beneath a metal strap 33 riveted to the flange 16, with the saddle interposed between the two, as best illustrated in Figure 2.

These straps 31 and 82 serve to limit'the expansive movement of the elliptical spring, at the Same time yielding to permit contraction of the spring. v

In practice, two of the jumping devices are employed, one for each foot of a child, and each device is secured to the foot through the medium of the straps 18 and 22 so as to firmly secure the foot on the plate 15. With the device as applied in this manner it will be clear that by jumping the elliptical springs are alternately compressed and expanded, the expanding action serving to project the child upwardly into the air. Thus the child is able to jump to relatively great heights and distances as determined by the jumping ability of the child.

I do not desire to be limited or restricted to the particular form of spring employed as other forms of springs than the elliptical form shown can be employed without departing from the spirit of the invention.

Although I have herein shown and described only one form of jumping device embodying my invention, it is to be understood that various changes and modifications may be made therein without departing from the'spirit of the invention, and within the scope of the appended claim.

I claim:

A jumping device comprising a foot receiving member constructed to provide a plate having the general outline of the foot and ribbed longitudinally to reinforce the plate against bending, an upstanding flange at the heel end of the plate, a heel saddle sebuckle for securing the straps together, U shaped upstanding yokes at the sides of the plate adjacent its forward end, sleeves mounted on the yokes, straps secured to the sleeves, one of which is provided with a buckle by Which the straps can be secured to each other in overlying relation to the toe portion of the feet, a base plate having depending protuberances on its under side, a full elliptical spring interposed between the plates and including an upper leaf secured to the medial portion of the first plate and a lower leafsecured to the medial portion of the lower leaf, the ends of the leaves having registering sleeve-s, bolts extending through the sleeves i'or securing the ends of the leaves to each other, and flexible straps secured to the ends of both plates for connecting the plates to each other and operating to limit the expansive movement of the spring yet yielding to permit contraction of the spring.

GEORGE Hi LONG 

